Transport properties of polyphenylquinoxalines

Autor:	D. Yu. Likhachev, A. Yu. Alentiev, O. V. Kozlova, Yu. N. Lazareva, A. L. Rusanov, Yu. P. Yampolskii, M. N. Vidyakin
Rok vydání:	2006
Předmět:	Membrane Polymers and Plastics Permeability (electromagnetism) Chemistry Diffusion Chemical structure Materials Chemistry Organic chemistry Thermodynamics Rigidity (psychology) Gas separation Solubility Selectivity
Zdroj:	Polymer Science Series A. 48:596-600
ISSN:	1555-6107 0965-545X
Popis:	The correlation between chemical structure and gas transport properties is considered for a new class of membrane materials based on structurally similar polyphenylquinoxalines that are characterized by different numbers of flexible-O-ether bonds in the repeating unit and different chain rigidities. Permeability, diffusion, and solubility coefficients have been estimated for the gases H2, He, O2, N2, CO, CO2, and CH4; separation factors for various gas pairs have been determined. For the materials with a similar level of cohesive energy density, which characterizes interchain interactions, permeability decreases with a decrease in chain rigidity, whereas selectivity of gas separation increases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e2045a0fa1742ae48d55df329f1aa38f https://doi.org/10.1134/s0965545x0606006x Zobrazit plný text záznamu Full text from SpringerLink